2. 职称英语
  3. They_________have arrived at lunchtime but their flight was delayed.A、willB、can

They_________have arrived at lunchtime but their flight was delayed.A、willB、can

游客2025-02-28  7
问题 They_________have arrived at lunchtime but their flight was delayed.
选项 A、will
B、can
C、must
D、should
答案 D
解析 本题句意：他们本该在午饭时间到达，但他们的航班延误了。will have done表示将来可以完成；can have done“可能做过……吗?”表示对过去行为的怀疑，用于疑问句；must have done “一定做过某事”，表示对过去事情的肯定推测；should have done“本来应该做某事，而实际没做”，表虚拟。but their fight was delayed 这样的结果，说明他们本来该到达却没有到达，故选D。
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